java web start setting problem

Hi Ranchers, I am developing a swing application which is deployed on jboss. Application get started through jnlp as soon as jboss boots up. I am packaging jre1.5 with application which is suppose to be used by application.for this jre's javaws setting am doing some jnlp setting because of which application dosen't get installed on m/c(doesn't get visible in control panel). Now my problem is if m/c already has jre1.5 then my application's packaged javaws setting gets changed to setting of already installed jre's javaws, because of which my application gets installed.(visible in control panel) Could you please suggest me how to prevent this?